<html>
    <head>
        <title>Test Upload a File</title>
    </head>
    <body>
        <form enctype="multipart/form-data" 
        action="http://127.0.0.1:9000/upload/ddd" method="POST">
            {{/* 1. File input*/}}
            <input type="file" name="file">
            {{/* 2. Submit Button */}}
            <input type="submit" value="upload file">
        </form>
    </body>
</html>